During upgrade from pacemaker version 1.1.14-2~u14.04+mos1 to version 1.1.14-2~u14.04+mos2 lrmd process hang and does not allow pacemaker to recover from corosync outage.
Long way to reproduce:
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1. Install 9.1 with one controller node in HA mode.
2. Try to upgrade to 9.2
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Expected result:
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Upgrade finished without problems.
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Result:
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upgrade fails on some random component outage.
There are errors in pacemaker log:
error: mainloop_add_ipc_server: Could not start pengine IPC server: Address already in use (-98)
error: main: Failed to create IPC server: shutting down and inhibiting respawn
Pacemaker process restart every 2-3 minutes.
For example view https://bugs.launchpad.net/fuel/+bug/1641947
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Fast way to reproduce:
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1. Install 9.0 or 9.1 with one controller node in HA mode.
2. Login to controller over ssh
3. service corosync stop
4. Update packages pacemaker-cli-utils, pacemaker-common, pacemaker-resource-agents, pacemaker to 1.1.14-2~u14.04+mos2
5. service corosync start
6. wait 60 second for pacemaker to respawn
7. service pacemaker restart
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Expected result:
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Pacemaker recovers from corosync outage.
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Result:
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Pacemaker fail to communicate with zombi lrmd and constantly restart.
Fast way to solve a problem force pacemaker restart right after package update and before corosync restart.